The host rock is Lower Jurassic Hazelton Group volcanics con- sisting of andesite, intercalated tuff, rhyodacite and rhyolite flows. The rock is altered and bleached when it is fissured due to mineralizing hydrothermal vein formation.

At 1340 metres elevation, an adit was driven west in two mineralized fissures. Both strike northerly and dip west at a low angle and contain vein quartz, with pyrite, arsenopyrite, sphalerite, and galena. Small sulphide veinlets crosscut the altered rock between the fissures.

The two main veins are traceable for 122 metres north to an elevation of 1370 metres. Their strike changes gradually to due west and dipping south 35 degrees. The fracture pattern appears to be curved (saucer-shaped).

The sulphide rich quartz veins range from 16 to 40 centimetres wide. A 25 centimetre channel sample assayed 11.7 grams per tonne gold, 110.05 grams per tonne silver, 0.60 per cent lead, and 12.60 per cent zinc (Assessment Report 471).

A sample of the fractured and mineralized host rock adjoining the veins was collected by Kindle in 1954 and assayed 4.8 grams per tonne gold, 166.6 grams per tonne silver, 5.55 per cent lead, and 13.10 per cent zinc (Geological Survey of Canada Memoir 223, revised edition, page 112).